I did it for 2 years.... i still stutter, but i lost the fear of speaking and now i can speak in almost every situation ( still scared of speakimg i front of big audience, but thats something everyone has).... if im having a bad stuttering day, i simply slooooowwwwww down my speech, and take long pauses between phrases. Ive had some of the best experiences using this approach.... idk why but people respond better when i speak very slowly, and maintain eye contact.... try it out